Cita APA (7th ed.)
Draffin, N. (2008). An introduction to bunkering. Petrospot.
Cita Chicago (17th ed.)
Draffin, Nigel. An Introduction to Bunkering. England: Petrospot, 2008.
Cita MLA (9th ed.)
Draffin, Nigel. An Introduction to Bunkering. Petrospot, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.